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            <h2 class="title" style="clear: both"><a id="envset_errpfx"></a>DbEnv::set_errpfx()</h2>
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      <pre class="programlisting">#include &lt;db_cxx.h&gt;

void
DbEnv::set_errpfx(const char *errpfx); </pre>
      <p>
         Set the prefix string that appears before error messages issued by
         Berkeley DB.
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         The <a class="xref" href="dbset_errpfx.html" title="Db::set_errpfx()">Db::set_errpfx()</a> 
         and <code class="methodname">DbEnv::set_errpfx()</code> methods do not copy the memory to which the
         <span class="bold"><strong>errpfx</strong></span> parameter refers; rather, they
         maintain a reference to it.  Although this allows applications to
         modify the error message prefix at any time (without repeatedly
         calling the interfaces), it means the memory must be maintained until
         the handle is closed.
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         The <code class="methodname">DbEnv::set_errpfx()</code> method configures operations performed using
         the specified <a class="link" href="env.html" title="Chapter 5.  The DbEnv Handle">DbEnv</a> 
         handle, not all operations performed on the underlying database
         environment.
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         The <code class="methodname">DbEnv::set_errpfx()</code> method may be called at any time during the
         life of the application.
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                <h4 class="title"><a id="idp7366360"></a>errpfx</h4>
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                          The <span class="bold"><strong>errpfx</strong></span> parameter is the
                          application-specified error prefix for additional error messages.
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                <a class="link" href="env.html" title="Chapter 5.  The DbEnv Handle">DbEnv</a>  
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                     <a class="xref" href="env.html#envlist" title="Database Environments and Related Methods">Database Environments and Related Methods</a> 
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